{
    "tender_id": 4138872,
    "check": {
        "ok": true,
        "versions": 2,
        "broken_at": null
    },
    "formula": "content_hash = sha256(content); hash = sha256(prev_hash + \"\\n\" + tender_id + \"\\n\" + version + \"\\n\" + recorded_at + \"\\n\" + content_hash [+ \"\\n\" + actor, when the version has one])",
    "versions": [
        {
            "version": 1,
            "recorded_at": "2026-10-30T13:43:59Z",
            "content": "{\"cpv\": \"34620000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3863615/zakup-mediow-na-potrzeby-realizacji-kampanii-promocyjnej-zadania-pn-zakup-zeroemisyjnego-taboru-kolejowego-w-ramach-fe-sl\", \"buyer\": \"WOJEWÓDZTWO ŚLĄSKIE\", \"title\": \"Zakup mediów na potrzeby realizacji kampanii promocyjnej zadania pn. „Zakup zeroemisyjnego taboru kolejowego w ramach FE SL 2021–2027”\", \"region\": \"slaskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3863615\", \"deadline_at\": \"2026-11-23T08:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-30T13:43:59Z\"}",
            "content_hash": "3a40c0c73081e12308e72af50dfbb540cc74ae57f4c2960657007c3c51bf7181",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "08d8fd35d502ded83b65e526c1976f3209985760ecfa3df40304a44460b83674",
            "actor": null,
            "seal": {
                "id": 7,
                "digest": "a9f75e7ec6726860fada5c5807cac164b76cf44582f14a01cd7b4a36f579f813",
                "file": "https://tenderiq.pl/rejestr/pieczec-7.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-7.txt.ots",
                "bitcoin_block": 973897
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-30T13:45:39Z",
            "content": "{\"cpv\": \"34620000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3863615/zakup-mediow-na-potrzeby-realizacji-kampanii-promocyjnej-zadania-pn-zakup-zeroemisyjnego-taboru-kolejowego-w-ramach-fe-sl\", \"buyer\": \"WOJEWÓDZTWO ŚLĄSKIE\", \"title\": \"Zakup mediów na potrzeby realizacji kampanii promocyjnej zadania pn. „Zakup zeroemisyjnego taboru kolejowego w ramach FE SL 2021–2027”\", \"region\": \"slaskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3863615\", \"deadline_at\": \"2026-11-23T08:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-30T13:43:59Z\", \"procedure_url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3673-99f4-f445-e2d6-6b000120b36c\"}",
            "content_hash": "d06fe16cbafcaa4a9cbec080ba03ccece006165f5315255619fbb6c2ca9fdaef",
            "prev_hash": "08d8fd35d502ded83b65e526c1976f3209985760ecfa3df40304a44460b83674",
            "hash": "171239dbf954263882db54472bc634f29f0addf943ddf85065dd4af9f09fd183",
            "actor": null,
            "seal": {
                "id": 7,
                "digest": "a9f75e7ec6726860fada5c5807cac164b76cf44582f14a01cd7b4a36f579f813",
                "file": "https://tenderiq.pl/rejestr/pieczec-7.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-7.txt.ots",
                "bitcoin_block": 973897
            }
        }
    ]
}